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Honestly, I get a little bit confused as to which SRAM cranks work with what. I'm looking for the lightest cranks I can find, so I'm assuming I want to get the Exogram arms. From what I understand, none of the cranks with the integrated spider will work because the spindle is too short for bb386evo. Is that correct? Will what I'm looking for have the 3-bolt interface or the 8-bolt interface? Or possibly either, depending on which year I find?

If it helps, these would end up going on a Felt F3x cyclocross bike with a single narrow wide chainring.

Honestly, I get a little bit confused as to which SRAM cranks work with what. I'm looking for the lightest cranks I can find, so I'm assuming I want to get the Exogram arms. From what I understand, none of the cranks with the integrated spider will work because the spindle is too short for bb386evo. Is that correct? Will what I'm looking for have the 3-bolt interface or the 8-bolt interface? Or possibly either, depending on which year I find?

If it helps, these would end up going on a Felt F3x cyclocross bike with a single narrow wide chainring.

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If you still need one, I got a barely used (<= 2 months) BB386 Sram Red eTap Crankset (52/36 & 172.5mm) lying around here. Used it in my BB386 frame which I sold again for various reasons.. so yeah. It's the native BB386 ("BB30 Wide") 00.6118.446.002 2017 model, bought on July 18th 2017 and only used for a dozen or two rides in August & September 2017.